Spotted earlier this year, asteroid 2020 CD3 is only the second temporary natural satellite, or minimoon, ever detected around Earth. It didn't stick around for very long, but we learned some interesting things about our temporary companion and why a mission to intercept similar objects is a good idea.
Spotted earlier this year, asteroid 2020 CD3 is only the second temporary natural satellite, or minimoon, ever detected around Earth. It didn't stick around for very long, but we learned some interesting things about our temporary companion and why a mission to intercept similar objects is a good idea.
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